Weather on October 20
Garden Grove, CA
55 Years of Data
Avg High
80°F
Avg Low
58°F
Warmest
2016
81°F avg
Coldest
1971
60°F avg
About This Date
October 20th in Garden Grove, CA typically brings warm fall weather, with average highs around 80°F and lows near 58°F. Over 53 years of records, the warmest October 20th was in 2016 (81°F average), while the coldest was 1971 (60°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 6% of October 20th dates historically, with the wettest October 20th recording 8" of rain. The last decade has been 5.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.8°F warmer on this date compared to 20-30 years ago.
Planning for October 20th in Garden Grove, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 88° | 57° | 72° | — | — |
| 2024 | 86° | 55° | 71° | — | — |
| 2023 | 93° | 63° | 78° | — | — |
| 2022 | 91° | 66° | 79° | — | — |
| 2021 | 76° | 52° | 64° | — | — |
| 2020 | 80° | 65° | 72° | — | — |
| 2019 | 85° | 55° | 70° | — | — |
| 2018 | 89° | 61° | 75° | — | — |
| 2017 | 74° | 63° | 68° | — | — |
| 2016warmest | 100° | 62° | 81° | — | — |
| 2015 | 80° | 63° | 71° | — | — |
| 2014 | 79° | 66° | 72° | — | — |
| 2013 | 78° | 59° | 69° | — | — |
| 2012 | 70° | 65° | 67° | — | — |
| 2011 | 75° | 59° | 67° | — | — |
| 2010 | 69° | 58° | 63° | 0.58" | — |
| 2009 | 78° | 59° | 69° | — | — |
| 2008 | 75° | 58° | 66° | — | — |
| 2007 | 84° | 56° | 70° | — | — |
| 2006 | 85° | 54° | 69° | — | — |
| 2005 | 76° | 53° | 64° | — | — |
| 2004 | 67° | 57° | 62° | 8" | — |
| 2003 | 94° | 60° | 77° | — | — |
| 2002 | 71° | 54° | 62° | — | — |
| 2001 | 74° | 57° | 65° | — | — |
| 2000 | 74° | 58° | 66° | — | — |
| 1999 | 97° | 55° | 76° | — | — |
| 1998 | 80° | 57° | 69° | — | — |
| 1997 | 74° | 62° | 68° | — | — |
| 1996 | 73° | 54° | 63° | — | — |
| 1995 | 77° | 60° | 69° | — | — |
| 1994 | 76° | 51° | 63° | — | — |
| 1993 | 89° | 54° | 71° | — | — |
| 1992 | 78° | 58° | 68° | — | — |
| 1991 | 79° | 58° | 68° | — | — |
| 1990 | 87° | 56° | 71° | — | — |
| 1989 | 77° | 64° | 71° | — | — |
| 1988 | 74° | 64° | 69° | — | — |
| 1987 | 74° | 55° | 64° | — | — |
| 1986 | 79° | 52° | 65° | — | — |
| 1985 | 75° | 57° | 66° | — | — |
| 1984 | 71° | 54° | 62° | — | — |
| 1983 | 79° | 65° | 72° | — | — |
| 1982 | 77° | 52° | 64° | — | — |
| 1981 | 84° | 59° | 72° | — | — |
| 1980 | 88° | 54° | 71° | — | — |
| 1979 | 73° | 57° | 65° | — | — |
| 1978 | 84° | 56° | 70° | — | — |
| 1977 | 69° | 56° | 62° | — | — |
| 1975 | 75° | 56° | 65° | — | — |
| 1973 | 89° | 55° | 72° | — | — |
| 1972 | 71° | 57° | 64° | 0.13" | — |
| 1971coldest | 77° | 43° | 60° | — | — |
53 years of data from SANTA ANA FIRE STN